SKDM Browser Integration v1.4.0 — Notification Spam Fix

IMPORTANT CHANGES
- Automatic browser-download capture is OFF by default.
- Installing/updating this extension resets auto-capture to OFF to prevent repeated failure notifications.
- Automatic capture failures and missing Banglarbhumi request context are silent; Chrome's normal download is left alone.
- Notifications are shown only when the user explicitly invokes SKDM and the extension cannot connect, or when a manual send succeeds.

To install: extract this ZIP, open chrome://extensions, enable Developer mode, click Load unpacked, and select the folder containing manifest.json.

To enable automatic capture later: open the SKDM extension popup and opt in. Keep SKDM running with its local bridge on 127.0.0.1:47653.

This package has been syntax/manifest checked, but must still be tested in a real Chrome profile with SKDM installed.
